Why doesn’t the woman charge the man for his late check-out?

W: Good afternoon, sir. Are you checking out now?
M: Yes, sorry. I know we’re a few minutes late.
W: That’s no problem. It’s always really busy at check-out time anyway.
M: Oh, really. The last hotel we stayed in charged us for a late check-out.
W:(1)The hotel isn’t booked this week, so it’s not a problem. How was everything?
M: The room was great. The beds were really comfortable, and we weren’t expecting our own fridge.
W: I’m glad you liked it.
M:(2)The kids were disappointed that the pool wasn’t open this morning, though.
W: I apologize for that. We can’t get a cleaner in any earlier than 10 a. m.
M: Well, we had a nice swim last night anyhow.
W: Will you be putting this on your credit card?
M: No. I’ll pay cash.
W: OK.(3)So the total comes to $123.67, including tax.
M: I thought it was $115 even. That’s what they said yesterday when we checked in.
W: Yes, but there is an extra room charge on your bill.
M: Oh, I forgot. My wife and I ordered some drinks and some snacks. Sorry.
W: No problem. So...from $140, here’s your change.